The BOOK 
this fubject only, might fupply matter fora whole 
treatife. 
The horns, which in the ftripped Butter- 
fly, that is already changed intoa Chryfalis, are 
extended and fituated between the legs and wings 
on each fide on the breaft, fo as to touch at the 
fame time the trunk with their extremities, are, 
in the Caterpillar, hidden under that part of the 
head which conftitutes the fkull; and thefe 
thrufting themfelves up out of the head, are 
very clofely folded together, and, by a particular 
convolution afterwards, reprefent a ferpentine 
winding. "Vheir extremities are likewife clofely 
twifted intoone. Hence the horns in the Chry- 
falis could be extended above the breaft, on the 
cafting of the fkin. This I have already, with 
refpect to the Chryfalis of the coloured Butterfly, 
more accurately demonftrated, magnified in the 
explanation of ‘Tab. XXXV. It will be proper 
to compare this hiftory with that, and to read 
them together, becaufe the one throws great 
light upon the other. 
The trunk, which, in the Butterfly {tripped 
of its fkin, and changed to a Chryfalis, is {tretched 
along, and fituated on the middle of the breaft 
between the legs, horns, and wings, is found to 
lie wonderfully complicated, under the tkin of 
the creeping Caterpillar, between fome briftly 
and articulated hairs, fituated near the lower 
part of the mouth. Thefe very briftly hairs, 
and the trunk, are alfo found regularly difpofed 
in their refpe€tive places in the Aurelia, after 
changing the fkin. 
Laitly, the belly and tail, which in the But- 
terfly, when it reprefents, Tab. XX XVII. No. V. 
a Chryfalis, are found fhortly contracted and 
drawn together, are in the Caterpillar, No. IV. 
extended through the egreateft part of the fkin of 
the body. In the hidden Butterfly, or creeping 
Caterpillar, No. HI. all that part of the body 
chiefly, which is extended from the fore-legs to 
the hinder extremity, muft be accounted the 
belly and tail; and at the time this creature is 
changed into a Chryfalis, it lofes all its ten hinder 
legs, without exception. 
But, as it is not enough for me to have exhi- 
bited and defcribed the moft-profound myfteries 
of nature, as I have done hitherto; fo, at the 
fame time, I think myfelf obliged to. commu- 
nicate to the reader, the management by which 
I was enabled to find out in the hidden Butterfly, 
the difpofition of its limbs under the ikin of the 
Caterpillar: fince thefe limbs are there fof, 
tender, and almoft fluid like water ; and there- 
fore, when any one draws off the fkin from 
them, they are moft eafily removed from their 
natural fituation. 
In order therefore to provide againft this, and 
that the parts of the Butterfly, Fig. IV. hitherto 
deferibed, which lies under the skin of the Ca- 
terpillar, No. 1V. may be viewed to {atisfac- 
tion, and feen as they are naturally difpofed, we 
mutt take care, that thefe parts be firft hardened 
under the skin, to fuch a degree, as that they 
will not lofe their natural fituation afterwards, 
when the skin is taken therefrom. This is done 
very conveniently, if a Caterpillar, which is going 
28 
of NATURE; or, 
immediately to caft its skin, be put intoa bottle 
full of a liquor compofed of equal quantities of 
{pirit of wine and vinegar; for, as the Caterpillar 
is very eafily killed by this liquor, its limbs alfo 
will harden therewith, in the {pace of fifteen or 
fixteen hours. ‘Therefore, if the Caterpillar be 
afterwards carefully skined, the difpofition, and 
feveral foldings of the limbs of the enclofed But- 
terfly, may be very beautifully feen, as they lie 
under the skin of the Caterpillar. 
I fhall now proceed; and, in order to fet 
this matter in the cleareft light, I thall exhibit 
alfo, by difting letters in Fig. v. all thofe limbs 
and parts of the Butterfly which I have demon- 
{trated in Fig. 1v. or thofe that are already de- 
{cribed in the Chryfalis under N°. V, That is, 
I fhall now likewife thew, in the Chryfalis or 
Butterfly, which hath fpontaneoufly changed 
its fkin, all the parts which I have before 
fhewn in the Butterfly, drawn out of the fkin 
of the Caterpillar by art: for the creature, 
which I reprefent in Tab. XXXVII. Fig. v. is 
the fame which I have already delineated under 
N°.Iif. In this are firft {een the horns, Fig. 
Vv. a@@aa, diftorted from their natural fituation: 
then are obferved the two parts of the trunk, 
which, arifing below out of the head, and 
running over the breaft, are terminated, 4, on 
the lower part of the body; where they are 
likewife, but not much, deflected or bent out 
of their natural fituation. Next are difcovered, 
on each fide, two legs, which, being removed 
out of their natural fituation, I have placed on 
each fide of the upper wings, cc. The other 
two legs are not here reprefented, fince they 
may be plainly and more eafily exhibited lying 
under the trunk and wings in the infec itfelf, 
than they can in this figure. Under thefe two 
pair of legs the upper and lower pair of wings 
come likewife in fight, though only a part of 
the lower appears to the eye, dd, becaufe they 
are covered in great part by the upper pair. 
All thefe four wings are hikewife drawn out of 
their fituation. ‘The head and eyes, e, are feen 
above, and the tail and the annular divifions 
of the belly below, f, However, one can fee all 
thefe things but obfcurely, for two reafons: 
firft, becaufe thefe limbs, being placed in this 
manner in the Chryfalis, are difpofed in a pe- 
culiar order; and becaufe they are, in that 
ftate alfo, grown ftiff and hard, by the power 
of the air. But it is eafy to difcover the fame 
limbs of the Butterfly in all the Aurelie, and 
to feparate them from each other; provided 
one has firft fteeped them for a little time in 
hot water. . 
I fhall now likewife exhibit, in Fig. vr. all 
the limbs and parts hitherto enumerated, as 
well of this as of the creatures reprefented 
above, fince they are all but one and the fame 
creature. There is this difference fhewn in 
the prefent figure, that I have ftript the limbs, 
which I now prefent to view, of their laft fkin, 
wherein they were kept ftill rolled up: fo that 
we here now view this infect clad, as it were, 
in its perfect outfide, which is never caft off, 
and is abolifhed only by death. But as in caft- 
ing 
ee eee 
; c 
